FB20 Forester Engine

[Spannerman5]

I've had my 2014 Forester 2.0XE for a few months now and absolutely love it. It handles well with armchair comfort and go-anywhere ability. My only slight concern is the engine noise on start-up from cold - it sounds rumbly and clattery for just a couple of seconds, until the oil circulates and builds pressure. After this it's fine - just the usual Scooby chatter.
I guess the initial racket is normal (especially as the engine immediately spins at 1800-2000 rpm tickover from cold) - or is it? Should I be concerned? Has anybody else noticed this?
Would love to hear from others out there with this FB20 engine.
Thanks.