Just curious...?

Has anyone out there had problems taking there child out of a grobag.... I'm thinking of moving my DS into a big bed in the next 6 months, at the moment he's in a cot in a grobag.... just worried that he'll try and get out of the bed and fall over in the bag!? Also worried that its become a sleep aid and that he may not be able to sleep without it!

I know I'm not going to find out if any of these things are issues right now but I wondered if anyone had any experience with some or all of them!

Thanks

L.