IMX, it varied a bit with build. I've played Tactical (not technically 'lazy,' mind you) Warlords who rarely ever let a round go by without at least shifting someone with Wolf Pack Tactics. I've played a Bravura (last night, in fact, kinda a coincidence given how rarely everyone in that group can show up, probably less than 1/month), who often makes basic attacks on his turn, because so many of his best tricks are off-turn, and because, at our current level, monsters' OAs hit too easily and too hard for Brash Assault to be remotely worth it. Quite a bit in between. But certainly, no combat goes by where they're not leadery - and a completely non-leadery round that didn't involved being dazed, stunned, or otherwise out of the fight almost completely tends to be rare.
Even at first, every encounter, you have two inspiring words, an encounter exploit, and your at-wills, both of which likely do a little something.
Sounds good...
...how did you find the Bard's level of flexibility? We're some of your other spells offensive, defensive (self), utility, or 'control' in any sense, or did you stick to the support stuff? Or did you just not play to a level where you had many spells known?
Interesting. Why not?