The most common retail sender names go something like:
Store Name (Brand Name) - examples: Circuit City, Victoria's Secret, dELiA*s
Store URL - examples: UrbanOutfitters.com, gap.com, Newegg.com, [evogear.com]
Store Name + [Word] - examples: REI Gearmail, L.L. Bean Newsletter, Buy.com Deals, ShopNBC Auctions, ShopNBC Clearance
[Branded Product] by Store Name - examples: StudyJams! by Scholastic
It's very rare that a retailer ever uses just a person's name - for good reason. Spammers often use fake names to get you to take a chance on their email (although Chad White caught TigerDirect using Carl@yahoo.com - oof!). But MyShape adds a personal by combining a person's name plus the brand: Sarah at MyShape
It's different. It's worth testing.
One caveat with testing sender lines is consistency. If an existing subscriber is part of your test group, you erode the trust and recognition of the first sender line (control). It's better to start testing on new subscribers, segmenting them out until you have enough to run a valid test.