I gave up Lent one year and put all my calendars forward the requisite number of weeks, which put me into BST while everyone else was still on GMT if that's what you mean?

Got a bit confused at one point and ended up being a hour late for a supervision (apologised that I'd forgotten about it rather than trying to explain though). Other than that it didn't have a huge impact on day to day life, just had to remember to convert times when making I note of where I needed to be when.

Up, but that was far less confusing as the time didn't have to change. Just the year - Every day.