[CAUT] microtonal tuning?

[John Minor]

I have been asked to tune a 19-tET(tone equal temperament) for a new 
composition in a few weeks. It will require 2 pianos to be tuned as follows:

Any theories on long term effects from this tuning on a decent piano? 
I'm considering using practice room pianos due to the "uncertain" long 
term ramifications of tuning +31 and +42 cents sharp on some unisons. 
Any comments?

Here's a we site dedicated to non 12 tone eq:

http://www.untwelve.org/

John Minor
University of Illinois

TUNING DEVIATION FROM EQUAL IN CENTS

				piano 1         piano2
C		0		0		0
C#		63		C# -37	---
Db		126		---		Db +26
D		189		D  -11		D -11
D#		253		D# -47	---
Eb		316		---		Eb + 16
E		379		E  -21		---
E#/Fb		442		---		E +42
F		505		F +5		F +5
F#		568		F# -32		---
Gb		631		---		Gb +31
G		695		G -5		G -5
G#		758		G# -42	---
Ab		821		---		Ab +21
A		884		A -16		A -16
A#		947		A# -53	---
Bb		1011		---		Bb + 11
B		1074		B - 26		---
B#/Cb		1137		---		B +37