I really couldn't care less what other people think of my tool purchases. If it's an informed decision, it's likely to be a good decision.
I personally bought their ratcheting cable cutters for $40 and for the few times a year I actually use them, they've more than paid for themselves considering the $275+ I'd need to pay for a real pair. Sure if I was using them daily or weekly I'd purchase a tool that would stand up to the abuse better.
If you only need to make a few punches here and there, I'd say try it out. You only have a $100 bucks to lose. Better than having an $800 set gathering dust at the shop.