I use my Gloria for applying detergents,weedkiller,moss killer,paint stripper,acrylic resin,bleach,teflon,xylene,graffiti remover...just make sure its cleaned out properly. You get straps with the sprayer that make it into a back pack sprayer as well as a hand held.
I do also like Lee like the "bucket" I have about 3/4 buckets and brushes in the van as well, as they are indispensable and cheap.....used in conjunction with a bin bag and baby wipes they are a life saver!
If it's a small job and i cant be bothered cleaning out the sprayer i just mix a "bucket" full and apply that way.
Saying that tho' i would be lost without the Gloria so much quicker.