Well, I'm about 6 months late on this subject, but I'm an old curmudgeon - so I don't NEED to be on time!

....thought I'd toss my opinion into the pile anyway -
I flat could NOT play with the bevel in any position! It felt like the fingerboard had a tumor. Maybe it was years of playing an Englehardt and then a Kay S-9 Swingmaster, but I just could NOT get used to it - and I tried.
So since my Upton had been severely damaged and I was doing a restoration anyway (a neck reset and...because I simply can't afford a new, quality fingerboard...AND because I just wanted to see if it could be done... reassembling a shattered ebony 'board) I planed the bevel completely out and re-did the relief.
Disclaimer - I Do NOT recommend you try this at home!

But have 50 years' experience as an instrument repair and restoration tech - primarily acoustic guitars, mandolins, banjos, electric everything, dozens of string family instruments including basses...and have built fretless electric basses. So it was also a challenge to myself to verify I could do it properly, bouncing ideas off the guys at Upton and using some "outside the box" thinking.
Now that it has NO bevel I can play it and other bass players like it as well (plus the restoration has held together for quite some time now!)