Great question .. pretty much all of the usage will be London 'trails' .. Swinley, Bedgebury, Epping, Peaslake. I doubt I'll travel (fly, train) long distance with it, just a bit of offroad bikepacking. If I gain skills and go anywhere rowdier I can always just use a hire full-sus bike.
Progressive is all very good, but how does the geo compare to the mtb you appear to be enjoying riding atm?