Sincerely, buy either and go fishing and I'm sure you'll be fine. You probably stand to have your gamefishing prospects either wrecked or rescued by about five thousand other seemingly innocuous little variables you forgot about until they pop up - BAAAAM! in yo face! - when you least expect it!
I've bought full rollers and I personally think rollers are great. I'd possibly even say they are marginally superior - IF I wanted a debate. I think the biggest handicap to rollers are unreliable humans.
But I would happily buy a roller tip too. I think there are other just as, or more important criteria to look at in a rod. What blank is it built on? Is the blank design the best for your purposes? It'll probably be a compromise because as I understand it, a great marlin trolling rod won't necessarily be the best sword rod. In fact, some of the features each pursuit apparently requires are mutually exclusive. That's not to say it won't work - rather, it could work very well by giving you an opportunity to hook a fish you might not otherwise be able to, thereafter showing you what bits of it work for that type of angling, and which don't, so you can then make an informed decision as to whether you should upgrade and if so, what features you'd like the upgrade to have.
Are the guide spacings good? How do the bindings stack up? Is the butt long enough? What's the reel seat like? Does your reel fit it properly? I'll assume the gimbal is ok, but.... is it? How good is the warranty? How good is the retailer with back up?
Whittle everything down without getting hung up on the guide thing at all, beyond the relative QUALITY of whatever its fitted with, and the need for at least a tip roller. Let it all take shape, and just let the guides kind of happen. You'll end up with your 'ideal compromise rod' (that's what I did with my 'ideal compromise rod', because we can't all afford two different $1200.00 customs built on specialist blanks - i can't afford ONE, lol!).
Of course I didn't end up with 'an ideal rod' - but I did get a nice rod that's an 'ideal compromise' (I think - until I prove myself wrong anyway). And it turned out to be fully rollered... Braid is not an issue with my rollers, pretty much guaranteed (and I'm running 0.46mm+/- hollow braid).
Gamefishing prep is all about maintenance and attention to detail, so rollers shouldn't present a big challenge to you, other than just don't forget or neglect them!
Tagit was right - they're just another integral part of each 'rig' and servicing them should become second nature - and it needn't be a drama at all. Fishing with boring old rings all year, I agree with Tagit - rollers are a welcome sight out on the rigging table. Their appearance hints at exciting days ahead, lol!