Cath, gabapentin did give me "whirly" feeling for the first few days too - started out on 1 400mg at bedtime for the first three days, then 1 in AM and 1 PM. After a few days of that, "whirlies" went away - none of the other symptoms you list ever figured in. Now taking 1600mg gabapentin daily along with Percocet and am okay with that. Fatigue is constant, but not sure if it's the Percocet, the gabapentin, or the combination. Stress can also factor into that fatigue. I'll take fatigue over debilitating pain any day tho.
Don't know about the patch...