That cutting that survived has progressed quite well. It would be knee high if it wasn't leaning over (I'll set it more vertical when I plant it out). Something has been munching the leaves over the past few months, but this doesn't seem to have done the plant any real harm.

So far this young 'un is entirely thornless. This is a contrast to the parent plant it came from, which seemed to be thornless on its older canes but quite spikey on the newest ones.