In theory, the Sequoia is supposed to be a "sport touring" bike. If it doesn't have eyelets on the rear, that would be an inexplicable oversight on their part.
Fortunately, if you want to go with panniers, you can get an Old Man Mountain rear rack; they use the rear axle instead of eyelets for support.
Also, not sure about older models but at least the latest does not have CF seat stays.
Even if it does have CF seat stays, a trailer should be fine. Trailers typically connect to the frame at the rear axle and don't put a lot of stress on the frame. I'd think that any type of unexpected torsional stresses that would damage CF stays would also bend the heck out of metal as well. However, I'd check with the real experts -- the trailer manufacturer.