I just upgraded to EE 2.7.2 and P&T Switch is throwing an error in the Developer Log. Everything still seems to work at the moment but it looks like P&T Switch needs to be updated:
Deprecated function EE_Fieldtype() called in system/expressionengine/third_party/pt_switch/ft.pt_switch.php on line 26. Deprecated since 2.6. Use EE_Fieldtype::__construct() instead.