My partner and I were having the WilBond discussion just yesterday. He sees it as a "do-all" substitute for sandpaper and elbow grease, and I find it has it's uses, such as wiping down steel railing stock prior to priming...
We're repainting some ancient motel room entry doors that all have 5-6 coats of poorly applied alkyds on them. He wants to save time (it's a time/material contract!
) and wipe 'em down with WilBond. His doors look like the poorly painted coat before, mine, sanded with 220 and dusted, give the illusion of a new door...And I took a whole 2 minutes longer per door than he did...
Yeah, the deglossers are nice time savers, but they don't knock down cat-tongues and boogers that the prior "painter" left behind...