Rebba - one of the things I've learnt on this vast emotional roller coaste and the steepest learning curve I've ever been on (from knowing ZILCH about RCC to 'a lot' in five months)(husband DX stage IV in May), is that each doc only tends to think in terms of their own speciality. eg, a surgeon will always think 'let's do surgery', an onc will always think 'lets put him on drugs', a radiologist will think 'lets try radiation'. I know it sounds silly to put it like that, but I do think it's true! So I think your husband's surgeon is 'only thinking surgery'.
BUT, I can't believe your oncologist isn't discussing immediate drug therapy, as Nancy/Twiddles says, UNLESS he is unaware of the shambles of the appointments system operating in the surgery department!
I do think, if you cannot get a VERY prompt date for surgery, over the next couple of weeks or so, that some sort of drug therapy should be started without delay. The onc/surgeon may, with good reason, say your fiance should not have surgery while he's on Sutent etc, as that will lead to complications during and after the op, BUT, as everyone here is saying, there is just no point hanging around watching tumours grow!
I hope you have success banging heads together in the surgery department, and get a promt, reliable date for surgery.
All the very best to you, Julie