I've found strokers to be such a hit-or-miss thing due to everyone having their own unique anatomy, and for the price it's kind of risky to buy for that purpose alone, so I'd mostly recommend this to folks who are interested in its intended purpose as a grinder at least as much as a stroker. That being said, here's my experience with it:
I bought this because I was interested in trying a grinder, but it turns out it doesn't really do much for me in that capacity. I think it's 100% a personal thing and nothing against this product. I am a trans man on T and the thing I DID enjoy was using the vibe hole as a stroker lol. I have a decent amount of bottom growth and I found this worked better even than actual strokers I bought, but I think it's just a matter of the size being a good match for my anatomy (it actually worked a little better when I was a bit smaller, my current size is probably best described as a little bigger than a bullet vibe at the base and tapering quiet a bit to the tip). I was able to get a lot of suction too and the best thing I found was lubing my finger and sticking it through the tiny hole at the top (it stretches a lot lol), since just covering it from the outside was a little awkward and tend to slip at the worst times. That being said, eventually the top hole developed a small tear near the very edge, but still works just as well and I think it's mostly due to too much friction when I wasn't as generous with the lube/didn't spread it over my whole…