I've used, in the past, both 120 and 35mm Agfa Rondinax daylight-loading tanks, useful in their way. The 120 version removed the film from the backing paper in 2 stages, by pulling the film into a sort of sealed cassette, then clipping a leader ribbon onto the end of the film to draw it into the tank, which, with care, pierced only the start of the film where it had been taped to the backing. Not as complicated as it sounds, but the film needed to be tightly wound when taken from the camera and to be left for a day to get back its tight roll, otherwise it could stock or, worse still, concertina. The 35mm version had a rather small built-in thermometer, which was OK for B&W. The original "new" price was reasonable, probably equivalent to about £40-£50 ($60-70 maybe) now, but I wouldn't pay some of the Ebay prices which they seem to fetch.
But I'll follow this new version with interest.