But sadly not even remotely close even in this case.
Puntures – just put an inner tube in – the sealant makes it messy but actually makes it easier to get the tyre bead out of the rim well than normal so I can do all of mine if I need to without tyre levers.
Yes the tyres are reasonably rare but Spesh certainly and I believe Bonty are launching some next year so they are getting better in the same way that MTB tyres have got better.
The tyres thesleves seam to perform very well to me and most other poeple who have tried them getting very good press on forums and in magazines a like.
I have converted three sets of rims from standard format, Reynolds, Spinergy and a set of Pianni (Pete Mathews) Roubaixs.
Alledgedly the only ones that are really difficult are open Pro's as they are just too deep channeled whihc makes the tyre very difficult to seal (I've not tried that myself on them but it would make sense from what I have seen)
So I'd say from a reasonable practical base of experinece that all of your misconceptions are exactly that.