Yo 'Vert Owners... are there any issues with leaving the top down for too long? eg excessive creasing, damage to rear window, etc

I have had it down since mid November... I got the boot on looking nice with all clips engaged, so not keen on putting the top up for another month or so.

Putting the boot on was an utter b*tch until I noted somewhere on the internet it's best to lie it in the sun for a while before fitting it.... but still time consuming to get it right.