In a few days I'll record a brass ensemble at a local college. The director prefers no regular mic stands be seen in front of the group but will permit something short, very low on the stage. Not allowed to put a stand on the audience floor in front of the stage. (It's an auditorium, so the stage is raised.)
So I picked up one ProLine MS112 stand and will put my small condenser cardioids on it, likely ORTF. I've heard another ORTF recording done at that location on that stage with the same ensemble with good results.
My concern is with footfalls, feet shuffling, and yes, any possible proximity effect that might muddy the sound from being so close to the floor. And I'm wondering if there's anything I could place under the stand, like a big piece of foam or whatever that might be a good idea.