(08 Nov 2015, 4:04 pm)GX03 SVC wrote Yet another constructive post from DanPicken...!
It's been an "Angel" liveried Gemini 1 or 2 almost every time I've seen and been on it.
I think because of branding, it's easier to notice. For example, with a Stagecoach service, you'd be much less likely to notice a single decker substituting for a double decker. Also, the Hybrids have very rarely been used on other services - perhaps a handful of times in their time at Go North East? I must agree with you also, because I've only ever managed to ride a Hybrid on the 21, and I'd rather something turned up than nothing.