The only problem I see with it is the need to disrupt ventilations to remove it from the patient when the time comes to introduce an ETT.
Here, well where I used to work, LMA's are used for those individuals needing an airway where an ETT could not be acheived at that time for whatever reason. After insertion an ETT can be introduced without the previously mentioned problem.
Here is a link to their site.
What the hell Smokfire? You guys still use a combi-tube?
Crip