If you are not as comfy as you can be, it plays on your mind too much that you are freezing, when indeed your sole focus should be on the game.
In a perfect world, your AR is picture perfect, newest gear and calls the big offside right at 0-0 with ten mins to go.
In a good world, he had trackies on and still gets the call right
In a world where he is frozen to bone, turning blue, his mind is preoccupied with his current state of health, he aint focussed on the game, misses the offside, but still looks the part because he has regulation shorts on.
Extreme I know but given the three senarios, I know which AR I hope I had, or was
As referee, no, I cant imagine ever wearing trackie bottoms, As AR, as we know, its possible to be stuck to the same spot for minutes at a time and then, whoosh, long through ball and your away again, then nothing for three four mins, muscles cool down, then, hey, your away again. 999 times out 1000 I would not expect AR in trackies but if it is whats needed one day, then am open to it.