I'm sorry the thread completely missed your point.
Generally speaking, let his foreskin do the work. It's not that much like a cut cock. Keep your hands off his glans and the inside of the foreskin. They're not meant for contact with rough, dry surfaces. The key is to roll his foreskin down (until you feel a bit of tension - different guys' foreskins retract to different points) and then back up. You don't need to grip super tight and you don't need to rub it like you're trying to start a fire. The feeling of having foreskin roll back over the head is fantastic.
If you use lube use lots, and pay attention to his frenulum (the spot under the head where the foreskin connects to the glans), his glans, and - for bonus points - the inner foreskin behind his head. Again, you don't have to use kung-fu grip. Compared to what you're probably used to, stroking him off will probably feel loose and light, and you'll probably have to reapply lube much more often than what you're used to.
As mentioned, there are as many variations on what guys want as there are guys. That being said, generally speaking, a guy with a foreskin will not need the same level of friction as a guy without one. Also, there's less emphasis needed on the glans and more on the frenulum and inner foreskin. Remember, though, those are places to go with your lips, tongue, or well-lubed hand. If you're jacking without lube, which is the norm, it's about rolling the foreskin back and forth (generally speaking, slow to start, probably slower than you're used to, and faster as he gets closer, but not necessarily as fast as you're used to).
I hope that helps.