Dave,
I have never used Latex over Solortex, but I will say this, All the times I painted over it I've use spray equipment, Sraying latex can be very difficult because of its thick nature, true for most water based products.. Also you want a paint that will go on thin and cover so the fabric weave is still visible, Other wise why used Solortex, right? I'd do some test samples to see what the finish product will look like before you commit to the whole model.


good luck