Perhaps you could explain your case for doing so, the better to help us understand why you ask.
- The employer wouldn't have access to the repository that contained their intellectual property.
- The employee would still have access to the employer's intellectual property.
If there was litigation, it would be difficult to explain to a court that some of this stuff belongs to the employer but the rest belongs to the employee. The employer might end up owning all of it.
You know most about the companies and projects you're working on.
When in doubt, you could ask your employer to see what they think.