Goosed,
I think we need to bear in mind that everyone's circumstances are different, and that we are to some extent at the mercy of the wider economic situation at the time.
Remember as well, that these loans/remortgages are subject to affordability criteria (max 50% of my current IVA repayment in my case), so as much as the fees and interest totally suck, the product should be 'affordable'. (In my case therefore, loan would be capped at c£150pcm).
Personally, knowing what equity I currently have in my property, and the cost of rent for an equivalent house in my area, had I signed up to a pre-2010 protocol IVA, with a 'remortgage, or sell-up' type clause, a secured loan may be a salvation in that it allows me to keep my house, and be £400-£500pcm better off (differential between current interst-only mortgage payment vs typical rent for equivalent property, even factoring in the loan repayment).
OK, I have a typical 2010 protocol-compliant IVA, with the standard terms relating to equity release (so as you suggest, I will only contemplate a secured loan as the lesser of the 2 evils if having to otherwise contemplate a sub-prime remortgage).
If the news is to be believed, the housing market is on the up again (certainly seems to be the case here in the South East). So in 3-4 years time, when this clause will kick in for me, there has to be a fair possibility that banks will by then, have further relaxed mortgage-lending criteria. I may therefore have to face the prospect of one of these loans as an alternative to a sub-prime mortgage offer. I sincerely hope I am wrong of course, and that I can wrangle a 12-Month extension instead!!!
Fingers crossed!!!
My opinions are just that: Based on my experience and being a self-employed IVA customer.