We live on a static houseboat at the moment and have used bottled gas for the last 7 years for both cooking and central heating. Both the cooker and combi boiler are of a standard type but have been converted to use LPG.
We store our bottles outside, I know other boats have theirs onboard due to continually moving, but houseboats have to have regular safety certificates and having the bottles off the boat makes this a lot easier process to get a certificate, part of the issue can be that LPG is heavier than air so collects at floor level which means that leaks are not always noticed as quickly as with natural gas..
We have never noticed any lack of performance using the LPG in comparison to natural gas but my one complaint would be that the local price for a 47kg bottle has risen by over 50% in the last 5 years.
Jim.