I started riding when I was 11, and my first bike was a 60cc Yamaha with a heel toe shifter. My tiny feet rested between the tabs and every shift required a foot shift either forward or back.
Forward to adulthood, and I have owned two bikes with heel toe shifts, and now I have to decide which end to rest my weight on. This is annoying too.
If you really want one... I suggest measuring the output shaft diameter,.. and going to a dealer and finding one from another bike with the same.
... but,.. sit on it and feel where your foot will rest.
You need Shaq size feet to rest on both.
Maybe you need a shorter shifter? In which case... do the same.
Go to a dealership and find a bike with a shifter that fits yer' foot.
I'm not trying to talk you out of what you want,... but I've ridden a lot of bikes over 50 years, and heel toes annoy the heck out me personally.
... my riding buddy, on the other hand loves them.
So what do I know?...