Citrus Wash won't strip anything as it is pH neutral; it's a maintenance shampoo like Maxi Suds II. Citrus Wash & Gloss on the other hand will strip effectively. I break down their shampoos into purpose:
Maintenance (won't strip LSPs, pH neutral):
http://www.chemicalguys.com/Car_Wash..._p/cws_101.htm
LSP stripping (pH towards acidic end of spectrum):
http://www.chemicalguys.com/Premium_..._p/cws_301.htm
And they do carry two foam gun variants:
http://www.chemicalguys.com/FOAM_BLA..._p/hol_181.htm
http://www.chemicalguys.com/FOAM_WAS...p/hol_ff_2.htm