A specific thing being Eldritch has taught us about magic and energetic alignments is that it is very difficult to make wards, servitors, fliters, etc. to deal with energy types you cannot handle. As they are made from (largely or solely) your energy, they will have those same weaknesses present within them. This very much goes along with our "repurposing general resources can be useless", as virtually all guides on banishing and protection assume you can utilize an energy type that is safe for you but harmful to the assailant.
This may seem a bit obvious to some, but we have largely seen it mentioned indirectly where we've looked, and it's important to note overall, we feel. People can develop immunities and gain attunements, yes, but this principle may be a very significant factor in advanced energy workers and magical practitioners becoming spirit workers whether or not they want to. Sometimes you need to hire assistance where you cannot manage yourself, and there is nothing shameful in that. It's far better to escape unscathed or less injured thanks to assistance than to merely survive and undergo a long, uneccessary recovery process but leave with your pride intact.
Just remember to pay them and respect them in turn.