It doesn’t work out at 5/5 I’m afraid, particularly in the winter when schedule reduces jump seat options. This sort of thing does suite a few but it can be very fatiguing and pretty unsocial with not quite the expected financial gain expected. It does offer FR superb operational flexibility. Good for them, not so good for you. If (and you will) be sent to destinations with poor connectivity it’s not uncommon for guys to overnight to get there due to any combination of factors from duty start/finish times and then connection. Remember FTL’s are a bit more restrictive these days and your legal rest between jumpseating and operating / vice versa. You will resort to buying tickets with other airlines, so factor that in. Wholesale roster changes can scupper you properly when rostered out of some place that has a major festival / event going on and the choice is last room going 300 bucks per night or taxi, drive, train 30km away! Factor these costs in. The novelty will wear off rapidly. 5/5 Can in the odd situation feel a bit more like an 7/3 to 8/2
Tax issues are a whole other box of frogs!