I've been looking at this card and thinking, is it better than the multi-deck staple barrier breaker, Corroder. So I ran some maths, I took each barrier breaker in the game, assumed 3 for all the barriers which grow stronger, such as Next Silver and the results are interesting.

On average, to break every piece of Ice in the game, Corroder will cost 4.225. In total (not including barriers that change types to become barriers), it costs 131 Credits.

In comparison, Sherman will cost 4.45 on average. It can break every piece of ICE in the game for 138.

Corroder is cheaper on 17 pieces of ICE. Sherman is cheaper on 11 pieces of ICE. They cost the same on 3 pieces of ICE.

On top of this, Sherman costs 3 to install and is out of faction for everyone, which means stretching influence even further in a deck like Anarch. So Sherman is just strictly worse, right?

I don't think so. In non-Anarch decks which want high link or can get high link such as a bigger rig Geist deck, I think this might work. It provides a powerful breaker, which costs no memory, which might allow you to install and run high memory cost cards, such as Sneakdoor

Also, with a Datasucker, you can make Sherman much much easier. Reducing strength by 1 to get a barrier into the 1-4-7 range saves you a whole 2 credits, which helps negate one of Sherman's issues.

So if you haven't tried Sherman yet and you are running Corroder and Datasucker, while being out of Anarch faction, give Sherman a try.

The weakest of the Breaking and Entering Suite, in my opinion. Most of the high impact or important sentry cards tend to hover around Strength 5-6.

The relevant sentry cards it will generally break are: Architect, Ichi 1.0, Cortex Lock, Swordsman, Neural Katana, Komainu, Data Raven, Caduceus.

When I play Armand "Geist" Walker: Tech Lord I still run 2 however. A cheap easy way to break those cards that digs you into more economy or more powerful breakers, such as Faerie for the glorious derezing of Archer with Crescentus.