I feel that your husband needs some information about the needs a woman has. He is either very misinformed or very selfish. He needs a male counselor (because he probably would not listen to a female)to help him understand the damage he is doing. Does he show general disrepect for the female gender? It sounds as though some very serious problems are headed full speed toward your marriage if some action is not taken soon.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!
I think the taking turns idea is a smart one. Also, you said something about getting some "items" for your trip. If you aren't into toys then I hope it isn't toys you are getting. If it is just some other lingerie or "mood setter" stuff then have at it. The "Great American Sex Diet" is a cute book that has some pretty tame "spice" ideas that might be more of the kind of thing you are looking for - a little more intimate etc... but might offer sufficient "props" for him. Just a thought.