Sponge and Rubber Gloves are useless now
What purpose do they serve?
Speed up healing? There are addons that do that directly, with greater effect and 100% reliability.
Charge efficiency? Even if you run both of these addons on a First Aid Kit, it will not be enough to extend the 24 charges to 2 heals. You get more use out of a single Bandage addon than having both of these.
A little of both? A needle or suture is strictly better because the stock bonus from additional great checks is more impactful than the extra bonus granted by these addons. Plus they give you a passive speed boost and extra bp.
These addons don't do anything. Either buff/revert them or remove them from the bloodweb.
Comments
Sponge and Glove add on is only good against perks that slow healing speed (sloppy butcher, coulrophobia, etc). It gives the same bonus heal despite these perks; meanwhile, the quicker healing add ons are weakened by anti healing perks. Think of it like a mini-autodidact per great skill check.