I have both good and bad experience with my LBS (same shop).
I bought my RS Reverb from them for quite a lot more than online price because I know remote seatpost tend to go wrong. It did go wrong after a few months. Took it in and they fixed it for me FOC no questions asked. Guys in the workshop are nice and definitely know their stuff. They even taught me how to modify my RS forks from remote to lever lockout using a spare damper he had in the workshop.
I bought a headset from them as they offered free fitting. Paid for, fitted no problem. Next time, I went into them to finish off a set of wheels that I started building for twice the price of the other not so local bike shop as I liked them and know they will do a good job.
When I went to pay for the work, noticed there was an extra £5 on the bill they sneaked on. Turns out they charged £5 too little when they sold me the headset and refused to let me go until I pay them the £5. If they've told me about it instead of sneaking it on the bill, I would be more than happy to pay it. I gave in in the end as it was only a fiver.
Still use them today though but I will be reluctant to buy my next bike from them if there's a better deal elsewhere.