I've got the switch (size 02) and absolutely love it, find myself using it nearly daily. The flexibility it offers for playing with methods is great. My favorite recipe is inspired by the Coffee Chronicler's, that brews as a V60 for the first half and then an immersion brew for the second half.

Recipe below taken from the Chronicler website:

Specs

This recipe can be adapted to work with doses from 15 to 26 grams of coffee and most common brew ratios.
Go for a 1:15 ratio if you have an entry-level conical grinder (such as a Baratza Encore or Hario Skerton).
Adjust to 1:16 or 1:17 if you have a more consistent grinder.

Pouring structure:

❶ 0:00 First pour: 50% total water volume (Open switch)

❷ 0:45 Second pour 50% total water volume (Closed switch)

❸ 2:00 Open the Switch and let it drain

Total brew time = 2.45-3.15.

However, the total brew time can be a bit longer if you’re brewing around the max capacity for this technique (26 g / 400 ml) or are using natural Ethopians.