Should a person with CNS vasculitis be given versed for minor procedure?

Small amounts . Small amounts titrated to effect should be fine. Only caution is the brain injury, if there is still swelling in the brain then extreme caution is needed to prevent slow breathing and carbon dioxide retention.
No contraindications. There are no contraindications. However, since you are already on clonopin it may be necessary for them to give you a higher dose of versed than would be normally used if you've already developed some tolerance to the klonopin (clonazepam). Best wishes.