I'll investigate the Nux mighty Plug Amp and try to find out its capabilities.
I just had a quick look at a few demos on YouTube and it does look like it has the capability to work as a practice tool for our needs, there is a clean sound with delay and although it won't be what the discerning Hank type player would instantly recognise as the typical Meazzi echo, it will do a decent job.
I'm looking at the specs to try and find out what the editing possibilities are on the effects, but I won't hold my breath.
It does however model the Vox AC30 as well as Fender Twin, DeLuxe Reverb, Marshall, Roland etc. It seems to be a decent piece of kit.
I still have a couple of the NU-X Space Echo pedals and they are very good.