The phrase "as impractical for" is correct and usable in written English.
It can be used when discussing the suitability or feasibility of something in relation to a specific context or purpose.
Example: "The proposed solution is as impractical for our needs as it is costly."
Alternatives: "just as unfeasible for" or "equally unsuitable for".
So they've traditionally been seen as impractical for mobile devices.
In truth, many such routes have already been rejected as impractical for one reason or another.
To begin with, these systems were painfully slow, and the approach was dismissed as impractical for logic and reasoning.
He goes to great lengths to disparage the idea of an elected head of state as impractical for Britain, even though many countries function perfectly well with one.
Some have attacked his proposals as impractical; for example, free tuition at public universities.
Despite student successes on the race circuit, many analysts, car manufacturers, and industry titans have written off solar technology as impractical for consumer vehicles.
One that was abandoned as impractical called for all the steel and other construction material to be delivered to the site aboard a specially designated PATH train.
Although it is true that federal judges are required to withdraw from cases in which they have any economic interest, that standard has been criticized as impractical, especially for state judges who may sit in sparsely populated areas where the only available judge's disqualification would cause delay and hardship for the parties.
(A third alternative to fossil fuel, the battery-powered engine, is regarded as too impractical for most everyday use).
For instance, Suppes understands first-order predicate logic, with its "linguistic" rather than "set-theoretical" entities, as "utterly impractical" for the formalization of "theories with more complicated structures like probability theory" (Suppes 1957, 232, 248 9; cf. Suppes 2002).
A report suggesting pregnant women should "play it safe" and avoid chemicals in many common household products such as food packaging has been criticised as impractical and confusing for mothers-to-be.
