Sameheda has shown to have 2 things that make me feel as if it would on be helpful temporarily. The fact that Sameheda has a Limit and a strong dislike for Katon ninjutsu.
The limit that Sameheda has was shown in the battle against Killer B:
As shown in this Page the Sameheda can not Absorb alot of Chakra at once, it was shown that when touching B. It was said B at 7 tailed Cloak but once Touched by Sameheda he was only reduce to 1 tail instead of having the entire cloaked removed. This limit was shown again when Killer B went for the Lariat:
Sameheda touched B and he reverted back into Hachibi Version 1.
Therefore Sameheda can not absorb a Large amount of Chakra at once.
Sameheda has shown it's dislike for heat related Ninjutsu when Killer B used it to absorb up a portion
of Itachi's Katon Release: Grand Fireball:
Sameheda showed it's disgust and disapproval of absorbing Ninjutsu with Fire involved and Killer B helps the reader to further understand this by said "Can't Take the Heat."
Where am i going with these Sameheda flaws is that with Susanoo needing a Great deal of Chakra, being compared to Bijuu and Amaterasu being the highest Level of Fire Ninjutsu, the combination of both these two at the time time would be to much for Sameheda to absorb all in 1 Serving. Sasuke having the ability to hold both Simultaneously I do believe Sameheda will not be able to Absorb Blaze Release: Susanoo in one serving and with Sameheda being need for Bee to counter Sasuke Amaterasu, Sasuke having the ability to Spam it now makes Sameheda unable to handle it. Sameheda having a personality may just end up refusing to even absorb sasuke chakra with it being so Sinister probably giving it a bad "Flavor" and him being an Katon and Enton user:
There is no way Sameheda will Absorb Susanoo Covered in Enton and still absorb a Spam of the the Exact "Flavor" it dislikes.
Yes Sameheda can eat would it does not like to but to much of it would cause it to refuse to eat anymore. Example:
IF a Child thinks eating Spinach and Broccoli is nasty can't stand the "Flavor" he can probably still force down some Spinach, but having to each Spinach and Broccoli at the same time and then having to eat another plate of Spinach and another Plate the child will eventually act out and refuse to eat anymore.