I've tried this a few times- i.e. doing banded sets followed by straight weight. The first straight weight set always feel a little squirrely to me, but it really depended on how much band tension I used on my banded sets. Like working up with a green band and then taking it off for my heavier sets is pretty cool- very explosive, but still controlled in the top end.
But once, after I had done 4 or 5 sets with a blue and a green on each side and very little bar weight (235, I think), I went to straight weight for some reps (325 for 5s, I think). I locked out so fast, I lost it and stumbled backwards in the rack and busted hand between the bar and the rack upright- didn't drop the bar though. Good times!