One explanation I've heard for commercials taking RAS in Class G,
irrespective of weather/flight conditions aside from the "duty of care" arguement... i.e. taking the best service available, is that the initial "if not sighted" avoiding action can be a normally rate turn possibly even 1/2 rate made on autopilot? (a practice frowned upon by the CAA, but allegedly widespread)...
Whereas taking RIS and trusting to spotting the conflictor, with the inherent risk of late sighting, may require more agressive avoiding action (See earlier F15 story). Any pilots wish to comment on this?