At my former unit the last RSSO I dealt with had been seriously injured in a parachuting accident so was 'exempt everything', pretty much. He was medically released. Regardless, he was deeply disrespctful and conniving, amongst other poor personality traits, and I would have fired him mainly for a really bad attitude and a lack of any kind of leadership control over the full time staff.
Before that: one of the most toxic people I've ever met and a perfect example of a Militia hater. He wasn't well liked by his Reg F counterparts either, which was fun to watch. He was kicked out of the CAF, thank Gawd.
Before that: PTSD. Like really bad PTSD I think. A good guy at heart, but it wasn't fair to put him in that job. Medically released.
Before that: we had a guy that never went into the field or worked weekends which, with a Reserve Unit, is pretty much a disability. He was posted here on a family compassionate thing where he had to look after a disabled family member, so was constantly 'unavailable''/ working the system. He seemd to be a bit disabled himself, and was a very slow 'thinker' if you get my drift. He never left the office much, and managed to hang on there for about 6 years (OMFG) until he hit CRA. One of the dullest people I've ever met, seriously.
Before that: a random assortment of 'awkward squad' types, as I recall, who were clearly sent here to get them out of the way and who did nothing to bring credit to their Regiment, sadly. One had been another parachute accident type (but also a dangerous idiot), another was clearly not interested in being in the Army any more and was sent here by the Reg F to avoid having to put up with his shit, and was subsequently released.
The overall effect was to provide a very bad impression of the quality of Reg F Officers at the Captain level, as well as the quality of the decision making by the higher levels of leadership who decided to inflict these people upon us.
Having said that the guy who is 'in the chair' now is, by all accounts, excellent so that would be the first time that's happened <checks cave wall paintings> since about 1993...