Garlick to me seems like a Listi type, older than you'd like, but has shown enough to be a potential bench piece.
He's put up solid RC+ in the Dodger organization (ignore raw stats, too many hitter friendly leagues) but didn't shoot up their system and had a hiccup at AAA at 26.
Did well in a SSS in the majors last year, a good sign that he wasn't intimidated.
Could be a Coste like late bloomer, good depth for Lehigh and a potential bench player, has two options left so provides a lot of roster flexibility.
Gilbert was a victim of a numbers game, one thing the Phillies have are a lot of LH RP prospects at AA and AAA ball.