As a candidate, I would like this approach a lot because it would give me a better opportunity to evaluate the organization to find out whether it'd be the kind of place I'd like to work. A short contract is an excellent way for both sides to evaluate one another and make sure that the fit is mutual; I've worked both in places where I loved the technology but disliked the culture and vice versa and neither one is great for long-term full time employment.

Of course, that is provided that the company would be paying my standard consulting rate for the relevant 3-month period.