With Wearable BLE, the design will pretty much be based around the coin-cell diameter.
So I recommend next Cypress BLE module will not need ground clearance, as that is hard to find on top of a coin-cell.
Johanson Technology 2450A 2.4 GHz Zero Clearance Antenna
http://www.mouser.com/new/Johanson/johanson-2450A-mini-chip-antenna/
