I'm halfway done with this mod on my goldtouch keypad. I still have to resolder when I have the time, though I did put them back on the plate to try them out. I definitely do feel a slight difference, though it's not as much of a bump as I thought it would be.
The extra tactility is nice, FWIW, but I don't know yet whether this difference is worth it to go through the trouble of doing this to an entire keyboard. PCB mounted, though, I'd recommend it, but I hate the layout of cherry boards. Also tried the regular clears and they feel more like blacks to me-- I can barely feel the bump on the heavier spring.
Your compaq is PCB mounted, though, so that saved you some time at least.