If something like this can generate stereo outputs and hence record to stereo tracks I would go that way for sure. Recording everything to mono and cloning that track and delaying it is not necessarily the way to.
(typical guitarist approach to synthesisers too. Remove all the wonderful internal stereo width by creating a mono track and cloning it for delay purposes. NOOOO.) If anything generates stereo then I say listen to it and see how it sounds. Record it!
There are plenty of things inside Revalver that will set up a stereo image. Dual delays, reverb, chorus etc.. If these effects are not worth recording then go for mono for sure and process later but on the other hand try creating the stereo width yourself within Revalver and record it that way too. Sometimes it is better to use the internal effects processing, that is why it is there. The internal effects will also sound a little different to your DAW effects and will go a bit towards separating the guitar sound in a mix a little better too.
Some plugins such as Headcase by ACMR BarGig has dual amps and cabinets and mic setups and you can create some pretty wild and wide stereo imaging in a way not so easily done outside the plug in. Silly to waste it by slamming it to mono and then trying to create some pseudo image using delays.
Channel tools is all you need for panning L and R channels independently.