The only comment I would make, is that if you get a personal loan, it's paid out and cleared within 3-7 years, if you redraw, in effect you could take 15 yr+ to clear that part of the loan.
Home finance, or lending against your house is generally cheaper than personal loans.
I work in the finance industry, and you generally get finance to match the asset, ie a long term loan for a large long term asset, and a short term loan for a cheaper, shorter term asset. You would expect the house appreciate in the long term, where as a camper wouldn't be worth a great deal after say 10-15 years.
Just my thoughts.