Can RCS thrusters be blocked?

[cantab]

Can RCS thrusters be blocked? I know normal engines can; if there's something not actually touching, but near enough in the exhaust plume, the engine won't produce any thrust. But I don't know if it's the same for RCS.

Specifically, is this "asteroid lander" likely to have any problems?

(It's not meant to move an asteroid obviously. Just grab onto it and let a couple of Kerbals chill out in the seats.)

Edited April 4, 2014 by cantab

[Tank Buddy]

They cannot be blocked, so place them anywhere you want.

[Superfluous J]

While they can't be blocked NOW, there's no guarantee that Squad won't fix that bug (lets face it it's a bug) in 0.24 and you may have some issues when trying to maneuver any ships you carrry over in a save. It may be best to - when you can - build assuming that they can be blocked.