why cant you take a strap on and take a drill that is slightly fatter then your dick, and drill through the dildo lengthwise, then when you strap it on, get yourself hard and align it into the base, then when your partner is sucking on it, the suction will be felt by you as well.
I believe in never taking no for an answer, and if you want something, something that you cant buy, then you figure out a way to make it yourself.