Sorry, I was thinking you were asking about solo/tandem use canoes in general, but after re-reading I think You're probably after info on the Solo Plus, specifically.
https://www.wenonah.com/Canoes.aspx?id=122 I've never seen one in person, but this is an internet forum so why let a simple thing like that get in the way of me professing my opinions!
It looks OK to me, as long as it suits your paddling/tripping style. In the image, the thwart/seat placement seems a bit odd to me. Why the redundant aluminum & wood thwarts (maybe just a bad illustration)? I'd prefer a solo seat farther aft of center so that I can not be reaching across the hull at the widest part, but it is fairly narrow with plenty of tumblehome, so maybe not an issue.
Bryan