Loom in proposals

I am thinking about creating and sending loom videos in my proposals to show value upfront. I know, many of my proposals may not get viewed, but I've to try as I'm new to freelancing and got just a few clients.

I know Upwork has 'record with loom' feature in the messages section, but when sending proposals, I guess the only way is tosend a loom video is by sharing a link.

I've seen many videos mentioning sending loom videos in proposals. My main concern is, does Upwork consider this as against their policies, can they suspend your account for that? Because when client opens your loom video, they can comment on your loom video and do the conversation there instead of Upwork.

As Upwork clearly mention, do all the communication on Upwork before hiring.

Do any of you use loom in proposals? And, do you get warnings or something from Upwork?