The test bonding of photo copied glass cloth seems to work but I would caution that many photocopiers use silcone oil in their fusers. This might weaken the epoxy to glass bond. Testing is needed!

The toners in copiers are colored with pigments, usually carbon for black. These should be pretty lightfast. Some inkjet blacks are colored with pigments but many are dyes which have lightfastness problems. Inkjet colors are usually dye based and have lightness problems. Printers claiming archive colors may depend on an ink to media interaction for this lightfastness. Fiberglass cloth is not the designed media so lightfastness is not a given.

Kayak builders have the advantage of covering their graphics with epoxy and varnish. This may be enough protection from the ultraviolet light that fades a printers colors.

It's good to remember the old rule, "One test is worth a thousand opinions."