
I have only ever had Leos so can not compare to other breeds having not had the same relationship with any other breed... Really, I was brought up by a Leo so might have slightly biased view :)!
They can be clumsy but I would not say they are any clumsier than other breeds of similar size/body shape.
My first Leo's best friend was dachshund, the dachshund was a boss and made it clear she needs to be respected!
All of mine have been good with small dogs, our neighbor has a yorkie x and it climbs on mine, she seems to naturally know to be gentle with smaller dogs...
She plays well with dogs of any size and seems to adapt her play style according to the friend.
After nearly 20 years,I am yet to meet a Leo that drools excessively... Some do drool a little, but nothing compared to the newfies I meet at the water rescue!
I always admire them but when they shake their heads I soon remember why I have not got one... I'm my mothers daughter and don't think I would like to live with the drool :)
The reason I actually got a Leo in the first place was that at that point the breed standard(fin) had "does not drool"in it and I believe that played a massive part on my mum agreeing to a Leo! I have not lived at home for 10 years now, my parents now have their own Leo and are looking to get a puppy soon...
I have my own and am waiting for my next girl to join us next summer so the whole family is hooked :).
I'm so used to the hair I hardly notice it but there can be lots of hair floating around when Leo is molting. you will soon stop wearing black... and pick sofas that go with the colour of your dog :)
Grooming wise if you don't end up with a fluff monster (e.g. incorrect, excessive soft coat), there will not be excessive grooming to do.
I brush mine every few weeks or so (little more often when molting) and they stay tangle free with that... Of course they do get twicks, sand, mud, water, small animals stuck to their coat when out and about, getting rid of those is part of everyday life with a Leo. Again, I'm used to doing this but some of my friends (who have different breeds) have said they would not like to do that after every walk... I would not live without a blaster, worth every penny.
As a part of keeping them fit I have cycled with all of my Leos, with my current one we do 45 minute rides in trotting speed, she really gets to the running mode(as long as weather is not too hot)...
She will happily go for hours with my friends retrievers and she is not the first one to drop! Especially if there is an opportunity to recharge herself in some water...
Some Leos can be hard work when they are young, or should I say harder work than many people expect them to be.
But if you are familiar with Danes, I would say some "behavior periods" youngsters go through are very similar (based on my very limited experience of young Danes) so you are probably aware of them e.g. they can be pretty sensitive at certain ages, silly fear periods, adolescence issues...
Or course there is also the responsibility of bringing up a giant breed, so little more effort to make sure they grow straight...
Over the years I have done agility, obedience( winning classes past the more traditional breeds) water rescue and search work with mine so they can be very versatile - unless you get a lazy slob of a Leo, there are some of those around as well... But generally I would say they are willing to learn and given a chance can excel in many areas.
I come from Finland and over there we have qualified search&rescue Leos, dogs competing in obedience, water rescue, agility, tracking...
We used to have 2 Leos and did not have an estate. Our girls sat on the back seat wearing seat belts!
I also took them to training in the bus, I did not have driving license as I was too young...
But in all honesty, I think you will need an estate, especially when you are hooked and realise your 1 Leo has become 2 Leos....
They really do have tendency to multiply, people are not joking when they say that.