It depends. You need to make sure the replacement cale guard is not torquing the limbs excessively. If it's pulling the cable & string over farther thatn they are, I'd be be very careful. The Swing arm has the most pressure near the arrow pass so that there is the least amount of limb torque as possible. By going to a standard upper or lower cable guard, there likely will be more torque to get the same amount of clearance as the slider will now be closer to either limb (instead of center).

The Jennings split limbs (especially the longer recurve ones on the Buckmaster/EPic, TRX, etc) are very susceptible to twisting under excess pressure...that was the reason the Swingarm cable guard was designed.

If It were me, I would put on a drop-away rest or a Whisker Biscuit type rest so that I could shoot cock feather sideways (or nearly sideways) and get appropriate clearance without putting excess torque on the limbs.

The other option is a low profile vane instead of feathers, but both of my suggestions may be unnerving if your season is starting soon.