Yep. Studio flash will have enough IR in it.

You get problems with odd things like flo. lights and things like that.

In fact a neat trick that many people use is to shoot Kodak HIE with a "black" IR filter on the lens and on the flash. And by this I mean one of those IR filters that ONLY lets in IR light. The ones where you better be using a rangefinder and f/16.

This gives you an "invisible flash". Very cool.

I recal that Weegee used this method to shoot INSIDE movie theaters during the movies!

Very cool.

This can be fun too if you want to shoot someone with their pupils wide open.