I have heated gear (Gloves, Jacket ect) and still put the OEM grips on and feel it was well worth it. The grips are always there if needed and I have used them a few times on cold evening rides when I didn't have the heated gloves and one ride back from Daytona in October when I broke a wire in my heated gloves. I sure was happy I had them then.
I sprung for the OEM because I felt it was worth the cost to me. Under $200 from my local dealer and I installed them myself.