schwa Symbol for Adobe Cronos family?

I've used Cronos for a longtime client and our materials need to include the "schwa" symbol, essentially an upside down "e" in between diagonal hash lines, like this: /e/, but with the "e" upside down. I've needed to do this manually in limited instances but the materials I am producing are calling for more use of this symbol. I found the instructions using the ABC Extended keyboard to use option+shift+: and "a" to create this but the font changes to Lucida Grande. I'd like to stay in the same family so fonts are consistent, and am wondering if Adobe has made any character enhancements to this family. I can't find any way of contacting them directly on this, so posting here.