Digital BW, The Print

I have been reading with interest about the Premier Art Print Spray
and other sprays.

Do these sprays say they have a particular finish?  I notice that both
Krylon and Windsor and Newton Acrylic sprays come in either a matte or
a glossy finish.  When using sprays like this on Epson Semigloss or on
PermaJet Oyster 271 does it matter which finish you use?  Does the
Premier Art Spray have a designated finish?  

thanks for any advice.

Ol' Don in Broken Arrow