Several providers use my photos but my name/watermark aren't associated with them to protect my H.S. Seniors and other business interests... I prefer using an upscale hotel for provider shots but I've carried my backdrops, stands, lights and etc to in calls as well.
Gear isn't as important as people make it out to be but it does matter to a point. I use a Canon 5DMkII and Elinchrom lights with soft boxes. I can bring a beauty dish and other modifiers but I find the providers generally want nice but not too damn expensive so I try to keep it simple.