I call shenanegins.
The LBS is not the place to get advice on this topic.
In fact the few that know what you are talking about will not help you because of perceived liability. (I know this from experience as a bike mechanic)
Several of the chain bike shops I have stopped in have HS dropouts working there that have no Idea what a flip flop hub is. When I described it one "mechanic" said "Yea, they stopped making those a long time ago, you must be pretty old".

So lacking the "Expert" advice of the LBS Bike forums is indeed the place to get said advice.
It has helped me with bike issues over the years and I hope I can continue to share my knowledge and lessons learned.

Enjoy