Sal,
I do use some 048 switches on my layout, for sidings they work well also. Now just because you are using 036 curve track in some places does not make the larger switches a mute point. The larger switches make it easy for all trains to run thru them on a repetitive basis. Especially if you plan to run any Tin Plate trains. Further the longer you build layouts the bigger engines you will want to purchase, most people go thru the switch replacement phase of layout building, starting with either 027 or 036 and then replacing them with larger switches as they become more experienced. Because I ran a lot of Tin Plate trains as a young guy, I needed the larger switches to accommodate the Tin plate engines and rolling stock, this saved me lots of money, I never went thru the switch upgrading phase of layout building.
My suggestion is 2 fold, one money and 2 great repeat running of most all different kinds of trains when using 060 and above switches on your main line.
PCRR/Dave
