Kees,
you will loose your beloved 1/500 synch...
changing the controls (and decoding the ttl) is what ikelite does as well, i suppose. I have no idea how difficult it is to change almost every button (it looks that way, 0,5 cm bigger or smaller will mean a lot.).
At least you will see where controls go wrong with an ikelite housing... There is a thread on somebody changing a 350D to a 400D housing (Sea and sea). The push buttons didnt seem to take much work there.
is ikelite's circuit tailored to the camera ? (otoh, you were using Heinrichs converter)
Gerard
PS: in the end i did buy DS-50 strobes, so i didnt have need your help on the old strobe use part.....