I guess it depends on what you define as a switch rod. If it’s the ability to use as a single handed or double handed rod then a lot of so called ‘switch rods’ are not really switch rods but light double handed rods.
i have a few rods which are sold as switch rods. The best of these and the one I have used the most is the sage TCX 8119. i never bought this intending to cast single handed but as a light double handed rod which it does extremely well. Would I cast it single handed? Nope as too heavy for my weedy arms.
so my advice for what it’s worth is to decide if you need or want to use a rod as a single handed and a double handed rod or just using it as a double handed rod. If you go for the former then maybe go for the more European rods like guideline, loop, shake oracle etc who maybe rate their rods on the single handed scale and are 11’ or less in length. If it’s the later then there are plenty to choose from between 11’ and 12’6” which will fit the bill and will be rated on the ’double handed’ scale.
the sage TCX for instance is rated as a 8 wt by sage. I would use a 460 to 480 Scandi on this rod or a 510 short Skagit to a 540.
the shakie switch I have is rated a 8/9 and I can cast this single handed at a push and use a 390 Scandi on it so much lighter. Of the 2 the sage gets more use as it’s a very versitile light double handed rod and I like using double handed rods. It also has much more power to land salmon and is just a brilliant rod for small to medium rivers.