New update: Progress v1.3 doesn't crash anymore with ROM 1.0... Don't dream, you won't see the loading bar on Oric-1 (impossible with the way the tape routines are coded in ROM).
But you can now put Progress before any recording: on Atmos you will see the loading bar, while on Oric-1 the program will load as usual.
I think it's the final version!
Don't forget it can be useful on Atmos:
1- helps being cool while loading
2- allows to see live the quality (or lack of) of the tape loading, without having to wait for the whole program to load before seeing you didn't set the sound volume correctly...
