Welcome to the Growery Message Board! You are experiencing a small sample of what the site has to offer. Please login or register to post messages and view our exclusive members-only content. You'll gain access to additional forums, file attachments, board customizations, encrypted private messages, and much more!
You could, but it's a waste in my opinion. Letting the clones veg for just a week or two under sufficient light will greatly improve your results/yield. That is my experience, at least.
It really just depends what kind of grow you are going for. If you're just cloning for a few plants, definitely veg them for a little while, but if you're going for a sea of green technique and have a lot clones, then put them in right after they root.