I happily wear Lycra on my road bike, and in the 90’s I lycra’d up for riding my MTB but since my MTB riding has changed from XC to more DH and all round trail riding I’ve taken to the baggies, they are comfy, I prefer wearing Endura padded boxers under them to Lycra shorts as you can overheat a bit but I have been known to wear bibs under baggies. I do my best to avoid needing a camelback; I don’t like the wet sweaty centre patch you inevitably get, so using cargo pockets and rear pockets on jerseys/jackets is my preference…
But I’d also never pay the asking price for most bike specific baggies, sale bargains, cheapo high street jobbies if they work or chopped down Combats for me…
As for Skin suits in DH, I think it’s a real shame the UCI ruled the way they did, Downhill as a sport should be more about function than fashion, and skin suits do actually make a difference, in my view it’s the start of a slippery slope, very much fashion being chosen over and above function…
As for everyone else bumbling about on trails and roads, wear what you like, no need to get all militant over the “Correct attire” you’ll always look like an arse to someone whatever you choose to wear…