They won't be active at the same time as a matter of course. But the UK will be able to now generate a full time capability - the ships will cover each others refit periods. Much like the Albion LPDs will be run. Clearly it would be a great idea for the RNR to train for these two capital ships to ensure that they could be regenerated quickly if required.
The RNR does not have the range of skills to run ships as complicated as a LPD. They are quite busy supporting operations too.
As QE will also need to supply the UKs LPH capability, I personally think the U turn was worth it if it gets the UK that crucial 100%
Agree.