I'm not sure if anyone is even talking to me directly anymore haha, but if you are, I will definitely DIY the modifications.
The extra cost of the tools is well worth it in my mind to learn extra skills. Plus I have a fully stocked shop (near enough) to start with.
I doubt I'll spring for the 300$ vintage case back openers or anything but Im sure more reasonably priced tools exist.
And finally, saying "This is a _______ I built" even if I have to shop around, find parts, etc, is always cooler than "bought", in my opinion.