Hey, since everyone and their mother was excited about Stealer of Souls combo potental (and especially with Mechathun), I thought I'd try it myself today on Wailing Cavern launch - to great success so far.

I originally didn't run Hemet, and tried to just draw until my deck is empty, but due to the slow Animation of SoS and because I'm not the fastest I mostly failed. Once I added Hemet it became easy, and this list definitely seems consistently faster than the version of Mechathun Warlock (without Darkglare) that I ran before (I can't compare it with Mechathun+Darkglare Warlock since I haven't played that Deck yet).

I played 13 games with this list (small change being that I eventually replaced 2x Drain Life with 2x Novice Engineer because the removal cards felt almost obsolete in the match-ups I got, and I still drew SoS and Violet Illusionist by time without Novice Engineer getting in the way of Free Admission really) and didn't loose once (although it should be mentioned that I started at Bronze 10 since I hadn't played the last 3 days), almost always having won by turn 6 or 7 (sometimes Turn 5 with Coin). 

Since I faced very little Aggro (infact 2 matches vs. Odd DH were all aggro/face decks i played against) and it's the beginning of the month, so most people are still memeing/not using their top decks while climbing via Bonus Stars (+cards always do better when they're completely new) it's clear that this isn't an accurate sample of how well this type of deck is going to do once the meta is settled again, but I had a blast and would wager that Mechathun Warlock is going to run SoS going forward - unless the version with Darkglare (which I haven't tried) is still faster.