It really depends on what your usage mode is. In your case - i.e. where you're seemingly at right now, in intermediate audio enthusiast and player of older games mode - it probably makes more sense to be where you're at.
It's just what when I game, I just like to get into it straight away without a lot of fuss. Also I've used the gamut of configurations (e.g. combining X-Fis with pro soundcards so that the gaming audio is routed through the pro card, and music audio comes direct from the pro card so I can use output switching on the pro card to route how and where the audio goes) and I know what works for me and what doesn't.
For gaming, I want a single thing that's ready to go the moment I put them on. I put on the G35, swing the mic down (turning it on), slide Dolby switch up or down depending on whether the particular game works better in stereo or surround, adjust the audio (and I can do this all from the left earcup) and start playing. Audio quality is absolutely gaming-suitable, and also perfectly acceptable for all-round listening though it's not at e.g. DT770 levels of capability (but then you can't really expect that in a <$100 headphone, let alone a headset).
If I want to 'actually listen' then the rest of the gear comes out and I switch outputs - but if I'm just surfing around Zune Pass for example after a gaming session, I'll probably keep the 35's on, just turn surround off.