Mike...since Conchy Joe did not make it clear in his post...you should be aware that he runs an equipment review website and that solar stick owner is one of his advertisers and friends. Nothing against the product....interest like that should be disclosed so you know where it is coming from.
As far as the claims go...the solar stick on a mooring left unattended will perform exactly like any other 100 watt fixed solar panel attached to an Mptt charge controller. Only when you are on the boat to adjust the panels can you expect increased output. The solar stick may make good sense for you from a mounting or ergonomics standpoint but you must be aboard to expect increased output compared to a fixed 100w panel.