So I'm considering getting a slim version for double penetration with my girlfriend and wondering if this would be the best bet because theres no straps. She has done some playing with my butt but I don't know if this is really the best bet for us. Do any couples have experience with this especially with a semi-inexperienced guy? I really like the no-strap design and would like to have some enjoyment myself hence the built in vibe! Thanks and any suggestions are appreciated!