i do reverse grip or rope, do them very slow and flex my tris in the end.
they work good for me, and i never do them solely but in a giant set with other movements.
problem is when people get to caught up in the pump and in shocking the muscle, many seem to forget to add weight to the bar. and then when they look back they notice they didnt really make any progress. supersetting, giant setting etc..all feels great at the moment and is great for sarcoplasmic growth (specially for a drug user)..but sarcoplasmic growth should not be the main focus as its not that big of a part of overall growth. (and its transient too)
obviously doing a couple of pump sets at the end of a workout will be no problem as long as the rest of the workout is focused on the basic exercises. (and as long as its just a couple of pump sets so you dont fuck up recovery...)
the metabolic advantages of doing "pump sets" can be achieved just by doing a couple of sets (1-2)...thats why i never understood why anyone would base a complete workout around them, which would be highly inefficient.
id goes as far and say that "pump addiction" is holding many bodybuilders back. become a powerbuilder and go to rehab for you pump addiction and you will see much faster growth.
and when i said reverse: i meant that you lean over the bar...so it become a close grip press (kinda like a close grip benchpress but a cable version.....)