What size iPad are you using? Is it mounted or do you stow it in the door pocket or somewhere else?
It's a full-size iPad, made circa 1981. Different serial number aircraft will have different nooks and crannies, but our bird allows you to store the iPads in between the left seat and center console, which is convenient if you need to charge them, as the 110v plugs are mounted on the center broom closet. It seems the several other -135s I've flown don't have that nook and they generally get stored in the pilot's door.
Company policy is that they go into a knee board strap when in use. Although admittedly, I couldn't tell you where that's written. It might be in the GOM. But it might not be written anywhere. Realistically, if one weren't able to find the strap, it wouldn't be the end of the world unless you had to hand fly with SAS off. And even then.
The BK-117 I flew was not SPIFR - could be flown dual pilot IFR under Part 91. So it was well equipped for the time. My approach plates were stowed in the pilot door with flip over ring binders. I knew full well though that simply flying the aircraft IMC single pilot with 2 axis SAS was going to be a handful, I always kept the localizer freq to the closest airport dialed in on NAV 1 and the course and GS interception altitude on a post it note to minimize fumbling with charts. If i needed to get vectors for the localizer it was an emergency. The controller could give me everything else. The flight MD sat in the left / copilot seat (no controls installed) and was generally not helpful as a crewmember for tasks other than "write this down".....
Some companies let the left seat tune freqs. Mine doesn't. And no one really has anything to write on handy except maybe their phase sheet, but often that's in the back with the other person. As a VFR-only pilot (at least for the 407 and 135), part of the checkride is IIMC with emergency vectors to the nearest approach. Apparently one 407 pilot in recent history went IIMC, picked up the approach and landed without incident, only to have the FAA come after him because he didn't formally declare the emergency. Ultimately, the company talked the FAA off the ledge.
On the IFR side, we're auto-pilot only except on the check rides, but it's always SAS and AP-Trim on when hand-flying, which makes power changes relatively benign (except the ball). My biggest issue is getting scope-locked on the altimeter tape when hand-flying so I don't bust MDA, which of course causes my CDI to deviate, and then I feel like a Primary student in the T-34 again.
But seriously, hand-flying it is fairly easy, as long as you keep your scan going since Otto isn't going to capture anything for you. But nothing new there.