I have a mid-drive and am thinking of getting a strumey archer 3 speed internally geared hub. I will probably have my local bike shop build the wheel. Does anyone have a 3 speed IGH with a mid-drive? What are your experiences, ie. can you still get up 20% grade steep hills? Do you notice that you have a majorly reduced top-speed? Haven't bought anything or even talked to the LBS yet, just looking for ideas.