So I came accross this and decided to give it a try.
I opened my account 2/2 and received a CL of $7,500. I tried to get more and pressed the CLI as soon as I activated card, Denied. I then called and I got $500 additional from the CS lady. I then charged $4,000 in total dental work.
I just asked for a CLI on the site in 4/23 and asked for 15k, they countered with 12k. I'll take it! Now my utilization will drop overall. and on next payment be under 30%, hope to have my score increase!
From opening my account to now my TU08 has gone from 671 (when approved) to now at 694. Have also paid $1,000 off already.