I’ve tried a haptic vest back in the late aughts. Tested it with CS:S if I recall correctly. It was fun until the point blank shotgun blast. Worth a try for sure, but I personally wouldn’t use it more than once.
Out of all the haptic options, this is definitely one of the more gimmicky ones.
The person who made the actual announcement attached a video of exactly that: https://meta.discourse.org/t/activitypub-plugin/266794/117