Cooking set up - external / internal gas supply question

[Rebiam]

Hi all - I have a removable rear kitchen with hob but wouldn't want to cook inside all the time. I am planning to get a couple of these

http://www.gasandhireltd.com/quick-rele ... d_316.html

and run a short hose from the cylinder / regulator inside the van and swap as necessary so when cooking outside I can just unclip the internal hob and run a longer pipe outside to my cooker. Can anyone forsee any problems with this set up?