Here we go...............
I raced Monday morning in the 350 classic (skinny treaded tyres) it was rubbish weather, very wet, very very windy on the mountain and then it started raining, not drizzle RAIN. I have never raced at the MGP in those conditions before. Practiced a few times though.
Did I enjoy it, hell yes. Would I have enjoyed it more in the dry hell yes x 2.
For me it worked out pretty well, I had a badly slipping clutch from the end of lap one so much so I only used four out of five gears, so the conditions played to me, well sort of.

Plenty of Junior riders asking about track conditions as I walked down from parc ferme.

Personally I would not have started on the dry tyre many bikes were shod with, however a fair few riders (the winner included I think) had the wet tyre on (not the rain tyre), this tyre looks like a dry tyre but with quite a few extra 'lines' in it. Just the job for the conditions. I would have started on that tyre too.

Phil has a difficult job and sometimes damned if he does (remember when he cancelled practice because it was wet and a lot of riders were not happy) and damned if he doesnt. A fair point to note is he would have received reports from sectors around the course and the travelling marshals too.

Hindsight is a wonderful argumental tool and having experienced the conditions in the morning a one hour delay would have been helpfull. But that was only fully realised one hour after the Junior race had started!