The thrill for me is mostly visual, not sensual, but it can make for some great foreplay before going on to other things. But I've also gotten off that way.
I'm cut so always the "docked" dick. I hold his foreskin in place with one hand while I slowly stroke myself with the other. He strokes himself, too, but neither of us too fast or vigorous, or else we'll come undocked. Slow-stroking can take a while, but once you get the rhythm you can be kissing and tonguing, either standing or kneeling as you face each other, or I guess also on your sides, though I've never done it that way, to keep my arms free.
You can feel the other guy cum inside the foreskin against your dick head, with the jizz usually seeping out. Sight & sensation will often make you pop as well, unless it was you who took the lead.
But no problem if I don't cum that way, it primes me for a gusher when we do something else next. I'd include some explanatory pics here, but I assume that's not allowed in the Forum.
So who likes docking? Less common in the US, where foreskins are regretably in short supply.