well let's see.....
it seems to me that you are thinking that gbpusd will fall faster than usdchf will rise. this may be correct on a day to day basis, but could be that usdchf will have smoother price action.
unless at the same time you are thinking that the euro will gain value over the usd and i am not convinced that this is in the short nor medium term outlook.
might end up being a good trade, but it will need help from a ranging usdchf pair and may still be a bumpy ride down.
