Coleman has the Beltway monopoly on Spyders and Spyder service. As stated, they sell and service more than Spyders. Their service departments operate on a "first come, first serve" philosophy; I rarely, if ever, get anything through them in less than a week, usually two (this is true for *any* bike, not just the Spyders).
I've never dealt with the sales department, but I've heard nothing offensive. Their accessories and parts departments are first-rate (Melissa in accessories at Falls Church is fantastic). The mechanic service is straightforward; no personal touch, but competent. Unfortunately, like everything in the area, they are expensive, particularly for Spyder service.
I don't mind paying a premium for convenience-- Coleman Falls Church is just a few miles from my door, easy to get to and back-- but I wish they were far, FAR faster. Pay a lot for fast service, or pay little for slow service, but to pay a lot for slow service... ugh.
That said, there are other dealers further out that charge less for work, and some even work on an appointment, "while you wait" basis, if you're willing to hike. I personally used Trumbull Motorsports out in Mechanicsville, MD, for some same-day installations. Good service at a good price, but out in the middle of nowhere-- they don't even have a waiting room, I ended up napping in the middle of the parking lot against a Sea-Doo crate. nojoke