I doubt that will ever happen, could you see Z Records let Vaughn, Lillian Axe or Von Groove support Ten I doubt it. On the other hand could you see Now & Then let Ten support one of the above the answer is no.
Both labels are different, Now & Then is more Pink and AOR where as Z Records are an out and out Melodic Hard Rock label and both believe in their material.
As I said before Z Records are currently out promoting and maybe even out selling [not sure] their opposition here in rainy Nottingham, maybe this will make the other labels follow with some good promotion !.

Lonesome Dave