I like wearing roadie style kit on my road bike, it just feels better not to have baggies etc flaping in the wind. I've got a nice collection of Team Aldi jerseys 😆 Saying that i have bought a couple of nice ones this week for my jaunt to Paris next week.
Picked up an Endura England Flag Jersey and a Raleigh Pro Team Jersey, on one of teh days you are meant to ride in a Pro Team Jersey, I wanted a Sky one due to the English links but there's no way I was going to stump up £60 for one, and as I ride a Raleigh road bike, I thought I'd get the Pro Team one.
There's no doubt I'll use it for other road rides, but I wouldn't wear it when out on the Mountian bikes. The Aldi ones and the England one I will and already do, but with baggies.
Personally I don't see the problem with wearing full Pro Team kit, it's their money and they can spend it as they wish. When I was match fishing you'd get guys turn up in replica team gear adn guys wearing trackies and a t-shirt.
What you wear doesn't contirbute to your level of ability and skill, it does however contibute to how you feel about yourself. If you feel good wearing team kit you'll do well within your abilities, conversely if you feel crap about yourself you're never going to perform well.