Unfortunately this is not possible for the time being, nor will it make it for v1.0, although is it a feature that is high up on our candidate list for a subsequent release.
In the meantime, as you're evaluating SQL Source Control, an option is to get your colleagues to install SQL Compare and request trial extension keys from email@example.com
Alternatively, if one of you is licensed for SQL Compare Pro, you can perform this task on behalf of those who don't have it.
For a full end-to-end database development solution, we'd strongly recommend developers acquire a SQL Developer Bundle license. This is a really cost effective way of getting all Red Gate's SQL Server development tools, and benefits from attractive bulk discounts.
Red Gate Software