I've not tried myself as don't have a h3.2tc to hand but I have been told it works and both the h3.2tc and h2h both use the same directory structure in the flash directories ie /zgemma/h3 so it will flash
I think I read recently that the only issue is that using a h2h image on the h3.2tc is all the information screens etc will say it's an h2h rather than h3.2tc