Given the lineage, I would guess it has a good possibility of being stretchy. TK and Runtz both have a good stretch and the Urkle not so much. I’ve never grown these so I can’t say for sure.
They’re doing great! they stretched exactly as that they almost smell like lemons? & maybe a wood cabin? frost is building heavily very early on, but other than that this cross seems very special // sorry for the late reply