This is an interesting question. When women with vaginismus are studied by physical therapy and EMG’s (electromyogram) it is noted that although the pelvic floor has too much muscular activity (spasm of the entry muscle), overall the pelvic floor is weak. Vaginal weights are used to strengthen the pubococcygeus which is the muscle responsible for Kegels and is located just above the entry muscle. It can’t hurt, though I doubt how effective these are since Kegels don’t do anything to help vaginismus even though there is widespread recommendation of Kegel exercises.
I would be interested to hear from others if Kegel exercises were recommended, how long you worked doing them and the outcome.