Hilarious! The peak doesn’t hang down any further just cos you’re on a road bike!
If you’ve got the riding position set up like your mtb then having a peak doesn’t make a difference. But once I’m in the drops the peak on my mtb helmet completely blocks my vision with my head in a comfortable position. Straining my neck to look down the road isn’t hilarious.
Try both Op, see what works for you.
This, even the fairly relaxed position on my commuter the peak did nothing but add a bit of neck strain to proceedings.
Riding on road isn’t fun, it’s not meant to be, but flat pedals to catch around corners, baggies to ruin the silence, and flap about slowing you down, a peak to give you a sore neck or bring you up into a sail like position, and a camelbak to give you a sore lower back are not enhancements, that’s why roadies don’t generally use them (I know a couple who use flats due to dodgy knees but that’s it).
OK OP, you’ve got those pedals kicking about, I’d do the same, but try it without the baggies, with a bottle and maybe a tool in your back pocket rather than a camelbak, and with the peak taken off your helmet, and it’ll be faster and less unpleasant.