I've done both reserves and regular forces, and it's somewhat different in focus. As we used to say as reservists: "Your career is my hobby". Meaning, the reserves tend to be a bit of a social club disguised in military clothing. You can't absolutely count on reservists to "be there" on any given training occasion: their civilian lives will always (and justifiably) have precedence: family, job, studies, etc. over a part time job. That's the nature of the reserves. On the other hand, when they are there, they are usually quite well motivated: they haven't signed a contract binding them to the job for years, they're there
because they wish to be, and it shows. Because there is a rather quick rotation of people joining and leaving the reserves, promotions tend to be a little fast, meaning a reserve NCO does not usually have the depth of knowledge or experience than a regular NCO of the same rank will have. Again, that's not derogatory: it's the nature of the part-time service. If I remember right, officers do get the exact same training in Res F and Reg F, but are more limited in job opportunities in the Res F: there's only so many positions for officers in a given unit.
You get essentially the same training, the same uniform, follow the same traditions and ethics, are under the same physical fitness requirement, discipline and military laws while you're at work, but the focus is more on the short-term training needs so there's things reservists simply cannot do as part of the reserves due to lack of time and resources. Reg Forces get access to language training, for example. Thing to remember, from the system's point of view you are in the reserves not for the purpose of being a reservist, but to be able to supplement the regular forces with a minimal amount of supplementary training (we call that "augmentation"). And the Reg F can definitely use you, as a rule: there's opportunities to work for 3 or 6 months contracts with the Ref F anywhere, including on operational deployments.
But you won't really get a "feel" for what a career in the Reg F is by going the Res F, just as being a part-time floor manager in a store cannot give you the full experience of making a full-time career of the position, day in day out, with long term plans involved. Strangely enough, the reserves tend to be a little more "Hollywood Army" than the Reg F, in my experience: because they don't get to be military day in, day out for years at a time, they tend to almost be
more military than the regulars in regard to how they act and react while they're at work. More of "Yes Sir, No Sir, Perhaps Sir would reconsider before pulling that pin right now Sir?". More formal in behaviour.
Overall assessment? It's a LOT of fun, I recommend it without reservations.
