I guess it comes down to husky Vs Stihl. If you want an outboard go with husky, if you want an I/b go with Stihl. It's not like they spec a Stihl 261 with an I/b or o/b clutch.
I prefer I/b clutch mainly because of ease of maintenance. If I wear through a drive sprocket I don't need an impact gun to get the clutch off or take the spark plug out to put a piston stopper in. If I'm out in the field and I'm clearing brash out the way to fell something and get a load of bailer twine (F'n farmers) wrapped around the drive sprocket I can use my scrench to take off the sprocket/clutch/bearing if needed (or send the e-clip into a low earth orbit never to be seen again, whatever I fancy).
I regularly take my clutch drum off, clean the bearing and regrease it (once every 2 weeks-one month depending) as I have before taken it off to find that bailer twine got wrapped around the shaft and melted the plastic bearing carrier. The only time I need to remove the clutch is to change shoes/springs but I have yet to have the need!
On the chain brake front I haven't noticed much of a difference between the I/b and o/b version in the repair sense. One plastic cover and it's all exposed. On the other hand inspecting the chain brake is easier on an o/b clutch but it's not impossible on an I/b.
When changing chains though, having to hoop the chain over the clutch then hook it into the bar is a pain in the ass. I can change a chain on my 261 whilst holding the saw with one hand and fitting the bar with the other, something I can't do on a o/b clutch. Having to disengage the chain brake and then having to get the other side of the handle into the hole in the frame, whilst lining up the bar studs whilst simultaneously balancing the bar is also annoying.
When I think about the practicalities of an I/b clutch, the worry about a slight bit more force on the crank kind of goes out the window. We're talking a few mm here not miles. For me, the I/b outweighs the o/b as the only advantage of an o/b is carrying an extra chain brake with you but I've never broken one, all the rest seems down to theoretical physics