Low carb diets for Type 1's does tend to make BG management easier. Simply speaking, the less insulin injected - the less likely you are to make errors when calculating doses; especially bolus.
Intermittent fasting, that depends on your reasoning for doing it... The majority of people will use intermittent fasting for weight loss and as a means to possibly decrease insulin resistance. For a type 1, the latter isn't really applicable - unless you have "double diabetes" (insulin resistance combined with type 1).
I don't see why running in ketosis would be any different for a T1, T1.5 or T2 - but as a T1 you may find that you're that wee bit closer to potential DKA when running on ketones. You're apparently safe enough running in dietary ketosis, but if your BG was to creep up/dramatically rise for whatever reason and you didn't notice, you may end up with a load of extra ketones as a reault of that high BG. Providing you have a correctly set basal dose then there shouldn't be a great deal of risk.
I'm no expert on the matter by the way, but I just thought I'd share my opinion
Also, I think
@robert72 runs on a very low carb (~30g daily) and is often in ketosis?