Well I can say, I have a burmese kush.
Im pretty sure that it doesnt agree with topping. As I topped it, it never grew 2 tops. It grew out a fat knuckle and a single new top.
But the plants health overall is still very good, Almost looks like a supercropped it. Ill have to see if I can get a picture.
But you should be fine, as far as your plants health goes. It might just slow down your overall veg time.
-MRGreenThum