For info, I have been using/testing using the Raspberry pi 4 (4GB), and EiffelStudio runs well on it.
For smaller raspberry pi such as RPI v1, I mostly used the command line compiler, especially to build the armv6 version.
But EiffelStudio should work, however maybe not as reactive as you wish.
As a reminder, the ISE_PLATFORM should be either linux-armv6 or linux-armv7 depending on the machine.
I haven't tried on other ARM devices, only raspberry pi devices.
Also at EiffelSoftware, we usually don't build the delivery for armv6 or armv7 regularly, mostly for stable releases (and not always for armv6).
So if ever you need one for specific release, let us know.
-- Jocelyn