You say that "many scientists" seem to be uncomfortable with LHCs.

But your evidence is four links to a single unscientific website (exitmundi), and a single discussion forum (risk-evaluation-forum) whose contact person, James Blodgett, does not appear to have any scientific credentials. A quick glance of the scientific papers he refers to suggests that none of the scientists so far involved are very uncomfortable with LHCs at all.

Do you have any stronger evidence for your claim?