Those pics are marvellous. Your button is nibbled! And the pale blue starts looking a little more like Monart's "queen mother" blue. But it's the deeper blue worries me more. It's one I associate more with Perthshire. I'm not even that sure about it being in Strathearn.
I have family who collect Ysart glass, it's not me, so my knowledge is a bit hazy.
But I know what I'm looking at and there's little I haven't seen. But not paperweights.
I'm sure I have seen a Strathearn vase in this colour combination, come to think of it. It was a strange one, no swirls, just banded, I think.
I did swither about it, but left it.
We do have somebody here, KevH, who pretty much qualifies as a "glass cane archaeologist" and Ysart glass is his speciality too. I'm sure he could help with your caned thing.
Have you found or searched Frank Andrews "Scotland's Glass" website yet?
http://scotlandsglass.co.uk/http://ysartglass.com/