Help for a Couple

So me and my girlfirend have been experimenting with anal and i would like to move up and try strapless or strap on. I have searched and im comfortable with the style of the Share or the Share XS, we would like to get one so that she can recieve vaginal stimulation and me with anal, so as you can see the Share does this quite well. I am just unsure if the bulb on the share will be too large for her, it seems that a lot of people seem to have an issue with inserting. So any other suggestions for a set-up that would be best for both of us?