I thought I'd give you ladies a review, since I've used them the last couple times we BDed. For comparison, I also have a Diva cup that I use sometimes for AF.
Instead is very easy to insert, I think much easier than the Diva cup. The way it fits in also seems like it would hold the spermies in closer.
After I put it in and stood up, there was a little bit of leakage. After that though, no problems. I could hardly tell it was there (in contrast to Diva cup which kind of bugs me).
After I took it out, both times there was very little stuff left in there so it seems like it may have helped those sperm make their way into the cervix.
Hopefully it helps! We also used a little PreSeed during today's BD.
Oh and totally unrelated but I forgot to tell you girls...SNL made me think of it again. When Dh and I were taking his semen sample to the lab, he was driving and I was keeping it warm. So I ran in and dropped it off (and OF COURSE a couple came into the lobby right before I did so I had to be all sly so they wouldn't see my Dh's sperm

) Anyway, I come back out to the car and get in right as the radio starts playing Usher "I wanna make love in this club" And Dh and I just died of laughter.