Hello,
For those of you that use or want to use HeidiSQL on Arch Linux, I've made an easy-to-install AUR package named "heidisql". It can be found here: https://aur.archlinux.org/packages/heidisql/ .
It uses the portable version of HeidiSQL and, of course, depends on Wine. After installing, you can run "heidisql" from the terminal or use the shortcut from your KDE/Gnome/etc. menu.
Let me know if anyone installs it and if everything runs smoothly. Cheers! :)