I don't remember the specifics but I can confirm he was brave :)

I know a local company at some point had a disk-drive-like interface to better use tapes (HiLow Datadrive) so maybe he had that, because saving work to cassette the way I saved things to cassette in the 80s would have been painful (not that it wasn't painful in the 80s of course!)

My recollection is it was basically the same computer he had since the 80s. I always have trouble identifying a specific sinclair version because I had clones (tk-90x, then tk-95).