If you prefer your car serviced by spotty teenagers, who scratch your car, leave bits left out when they put it back together, wrongly diagnose faults, then charge the same (or more) as Lexus, then I'd say go for it.
My comment is based upon personal experience, when the dealer I bought my car asked me to take it to them (when I spotted an issue), a mistake which I rectified rapidly by taking it to Lexus.