When I play glasgow kiss, I downpick the whole thing (except the solo of course), but people keep saying it's wrong, and it's sweeped, but I don't know how you can sweep so slow, downpicking sounds better.
Live Rig:
Ibanez Rg 150R w/ Duncan 59s
Marshall JCM2000 TSL60 Head
Mark IV Combo
Marshall 1960a Cab w/ Vintage 30s
Ibanez RG1570 Prestige w/ Duncan 59s
Jackson SLSMG Soloist
Currently in Ontario, Canada.

Do whatever sounds best man
"Kids in the backseat cause accidents, accidents in the back cause kids."

"Secrets are like herpes, if you have 'em you might as well spread 'em."
if it hinders you, don't do it...
as long as you're being efficient it's generally fine...
unless your whole technique's completely wrong...