Anyway. I finally got my camera back 7 weeks later, the afternoon before I went on holiday. The shop ended up footing the not inconsiderable bill as Sony were adamant it was a damaged camera, one that was also more faulty than when I took it to shop. I could see this in the photos they sent back of camera showing the lens cover sticking and covering a lot more lens than I ever experienced with it.
But I decided to buy some Olympus kit from the shop as I didn't know if the Sony would return in time and didn't fancy lugging my bulky Canon gear around whilst on vacation.
So I got an EM5 II with 12-40/f2.8 and the 40-150mm f2.8 which I'd wondered about getting for a while as a light interchangeable lens camera travel kit.
Though due to the Sony returning in nick of time I never even used the 12-40mm because the RX100 III covered the same angle of view and has a better sensor [for handheld work] and complemented the EM5 + 40-150 wonderfully and with no faffy lens changing needed.
However whilst on holiday the lens cover stuck again and EVF randomly failed to work on several occasions which has never happened before, so not impressed.