Am considering one of the Cosmo jobbies myself.
I have a Motech bash Plate and noticed when fitting that, there's plenty of space for the centre stand.
I would imagine most, if not all bash plates, (especially a genuine Suzuki one) will have been designed with the stands in mind.
Get one, if it doesn't fit I'll buy it from you at a vastly reduced price. ????
As far as lifting a lowered bike, logic alone suggests you'll have less leverage when placing the bike on the main stand, but I bet most cope quite adequately except in rare circumstances.