Why not just leave the bike cover home?
I just put the cover in the car.
Not sure how putting it in the car is relevant, but you might be onto something. At this stage I haven't had to use it, and in any case, I dread having it get wet and then getting it rolled up as tightly as it is now.
I do worry a bit about the increase in the height of the weight- we all know it's best down low.
When we've been off on a day-trip with the luggage left in the room I've been amazed at how much better the bike handles.
And that's apart from the fact you have full handlebar movement without the tankbag.