Yes, I will start a new topic by repeating some if this info.

More "playable" than the alto clarinet? No, it's a different animal entirely. My Vito alto sounds a lot closer to a bass cl. And, it fits my hands very well and takes an alto sax reed. This G horn sounds much closer to a Bb or A. It takes a standard Bb mouthpiece. But surprisingly, the bore is small, relative to typical Bb cl. That gives it tonal character all its own. And, the problem of matching a MP to its "energy" i.e. impedence. I think the small bore indicates German design and the Germans do produce many of the Albert system G clarinets. It's fair to assume the maker uses the same body for this as they do for the Albert they make.

Dave, with hands smaller than men's glove-size Large, I would not recommend this horn. It could be re-designed with some plateau keys I suppose, but it's only popular for Turkish/Greek music and they are focused on Albert system. It will be interesting to see how long it takes the designer and maker to make THIS design better.

You sound better on the Yamaha that you're used to.   

When this Covid thing is out of the way I'd love to go up there and help sort your embouchure out (where are you? Sunderland, I seem to recall).  I'm sure it would be much easier face to face.

I was cleaning my new/old HR mouthpiece with a dettol antibacterial cloth, which after cleaning was yellow, which I wasn't expecting. I also cleaned the inside with a cotton bud (Q tip) coated with alcohol based hand gel and it too turned yellow.