Although side by side RAMI out of the box could lose to SIG 365 in terms of size, weight and concealability, that diametrically changes when installing Pro packed by CGW. With that, RAMI wins hands down. Pro package obviously does not change dimensions or weight but adds single/double action trigger pulls that make RAMI a lot better gun for self defense purpose. First and subsequent shots will be easier to manage accurately at any distance up to 25 meters ( I have not attempted to try longer distances), 14 round magazine fits RAMI like a proverbial glove.;not so the larger capacity magazines for SIG.
With the right holster I doubt the difference in dimensions and weight between the two will be that noticeable.