Updated: Summer 2020

See also: 2020 Rush models with D/S floors (like the Thaya)

The Swings are fixed-decked solo or tandem IKs pitched at recreational users who seek the reassurance of a very wide boat and the dryness of a deck.

There were once and are maybe still two versions of Swing 1 and 2. Innova distributors in the US show red/black green/grey hulled models which they still list as made from Nitrilon Lite™. Europe and maybe elsewhere never had the black-hulled models and are made in Nitrilon (Nitrilon Lite™ has been dropped). The claimed weights for identical boats from EU/US are the same. You presume the green/grey doubles are now identical. See the table right about IK materials with more here. 

SWING I ▪ Length 3.16m ~ 10′ 4″ ▪ Width  87cm ▪ Weight 11.3kg ▪ Maximum load 120kg ~ 265 lbs

SWING II ** ▪ Length – 4.02m – 13 feet  ▪ Width  87cm ▪ Weight  14.3kg ▪ Maximum load  220kg ~ 450lbs

Note that what Innova in North America call the Swing EX is a Framura in Europe – a slimmer, fixed-deck, 4.1m IK which is much more suited to solo touring and inshore sea kayaking.

As others have commented, they appear to be taking on IKs from Advanced Elements and even the bird’s-eye view is similar. From the profiles it appears they’re more ellipsoid or ‘lemon-shaped’ than other models, or maybe it’s just that they’re substantially wider which exaggerates this impression.

The Swings use 2 or 3 curved alloy crossbars to keep the deck taught (similar system on my Incept and Seawave) and make room for the legs, as well as spread and form the width of the boat. Some blurb states these crossbars make the boat more rigid which may well be true. Constraining the sides (stopping them from flexing out as the boat bends longitudinally) will have some effect in overall stiffness.

As far as the preferred boats for touring, what is desirable is a decked boat the length of a Swing 2, but set up for a single paddler. That is the Framura aka ‘Swing EX’ to Innova – a good-looking, solo-touring, fixed-deck IK for those who think soloing in a Seawave is a bit much. 
Sure you can sit in the back of an SW2 and load the front, but it’s not right, is it? What are the actual benefits of a fixed deck on an IK? (the Swings’ decks unzip partially). Limiting swamping – sure. Keeping the sun off – maybe in sunny lands. Keeping you warm – I suppose so, but that’s what a dry suit ought to do: ‘dress for the swim [falling in], not the paddle [air temps]’ they say.
And many users complain that the zips are far from watertight. And so I conclude that the Swings may well be popular (actually I don’t think they were) but fall into the less desirable ‘bloat’ category: much wider than they need to be which is great for nervous day/rec users. But for the smaller niche of multi-day touring and sea use (space, speed, convenience), they’re not so ideal.

Another review • Some Swingers chat