Hi again Jensen,
Not charging commission on work you find yourself is actually a *good* deal that many actors search in vain to find (there is often nothing more galling than to feel you have worked long and hard with no assistance from your agent to find a job for yourself, agree a rate, and then discover that your agent wishes to take substantial commission on it!). However, the downside is that this may, tacitly, be an indication that the agency does not expect to source you vast amounts of work, and therefore expects you will need to supplement substantially by finding your own.
Some actors, it's true, much prefer to have time and resources available to pursue their own kinds of projects, of course, so this is not necessarily a bad thing in itself - not every actor *does* want to be called in for a commercials audition every other day! But this will come down to personal preference.
The more unusual element is that the agency are stating that they are non-exclusive: I am not sure you can go wrong with that, as such, because if it's true, you could always secure representation by another agency with no questions asked. But it is very unusual for most agencies who take their job of representing you seriously to waive their right to exclusivity over you - the only exceptions tend to be when you are asking to be represented in a very specific area, such as voice over work, that the agent you have signed with confesses no competence in.
In this sense, even if you have a non-exclusivity agreement with a first agency, you are unlikely to find other agencies that will wish to represent you *in addition* unless you sign yourself over exclusively to them and ditch your other representatives - this is just a question of economic sense (they don't want you halving potential profits by working for someone else). It might still be a situation that could work in your favour, allowing you an easy transition from one agency to another, but you have to ask: WHY is an agency offering non-exclusivity? The most obvious answer is, again, because they are guaranteeing little opportunity to find you work.
It is worth checking the small print because walk-on agencies/commercials agencies etc. invariably *are* non-exclusive, and allow the artists to hold multiple places on different agencies books because the nature of the work is piecemeal and different, but I am assuming that you wish to be represented as an actor/performer, first and foremost. Equally, there should never be any suggestion that you have to pay fees to the agency in order to secure representation: sometimes an agency that is very casual about the representation of its clients is creaming money off at source, and this is how they can afford to behave like this, though what they are doing is now, to all intents, illegal.
I am not saying that either of these things is necessarily true of this agency, but do make sure you go well armed to ask the right questions at the interview.