It'll run on either as long as you have the correct regulator/connector.

Just a question
where do you store the BBQ gas bottle when ttravelling ?
does it fit in the front locker ?
Is it a 10kg tank ?

Is there enough space to get 2 of those red jobbies in there ? or is it too tight ?

This will be the first time camping in my eriba but when camping in my camper I use gas for the fridge but also have a 2 burner campingaz hob but best of all the cobb BBQ I can roast a whole chicken & also do the lushest roast potatoes in the outer ring of it can also use it in the awning & move it around as the outer edge doesn't get hot it takes cobb fuel sells or you can use charcole honest its the best ting I have ever bought along with the colman event shelter which we happily sit under nice & cosy with all the sides on wind proof & water proof + you can cook under it as it's fire retardant