Isn't that the truth? Even a humble daypack needs a waistband (as opposed to a full belt) to keep the thing from banging about, especially on steep downhills.

In any case, as best as I recall he wasn't ever a formal "part" of the company; rather, he (reluctantly) licensed his designs to Coup for manufacture and marketing. And some of them were indeed very close to the plans and kits sold directly by Jardine himself. They were listed in the catalogs as "Ray Way."

Alongside these bits, strictly GoLite designs were also being sold and eventually formed the core of the business. Naturally there was an eventual falling out between the parties (nobody could have predicted...) but that's unlikely to account for any meaningful part of the company's demise.