Hi Harald,
I ordered a 10 string, light bamboo, black linear fret markers, black tuners, ACTV-2 block pick-up in deep baratone melody / standard (Stick) bass tuning. As I mentioned in the 1st post I HAD a Stick a few years ago, a used polycarbonate Stick in Standard Stick tuning. It didn't have the adjustable bridge so I couldn't change the tuning because it would throw off the intonation. So I sold it for what it cost me and ordered a new Stick. While waiting I saw a different companies tap instrument at 1/2 the price of a stick with 4ths tuning and canceled my Stick order and bought it. BAD MOVE!!!!! It was made well but the neck was twice the width of a Stick (Or at least it felt that way) so I couldn't play it. I traded it in on a bass guitar and here I am a few years later still wanting a Stick ... so I ordered mine two weeks ago. But back to the inverted 5ths tuning, I KNOW from having the Polycarb for a month or so how hard it is to get the HEAD into the idea of inverted 5ths. That's why I changed my cheap bass to inverted 5ths tuning ... so I can work on it before my Stick is ready. I realize the disavantages in regard to scale and riff work but it opens a big world in regard to taking a different approach in the bass guitar. I definitely think it's a worth while experiment for anyone! And of course a VERY worth while thing to do for any future Stick owner.
Anyway this isn't a Stick forum so enough about Sticks ......... but I honestly think inverted 5ths and the extended range bass guitar can make for interesting bed fellows!