mySqlBytes.buffer is getting converted to BigEndian even t..

mySqlBytes.buffer is getting converted to BigEndian even though both SQL
server 2005 and the CLR function are on the same machine which shows
BitConverter.IsLittleEndian == true

in tsql: select * from dbo.MY_CLR_FUNCTION(cast(1024 as binary(4)))

public static int MY_CLR_FUNCTION(SqlBytes mySqlBytes)

in debugger binaryData.buffer now shows bigendian!!
[0] 0 byte
[1] 0 byte
[2] 4 byte
[3] 0 byte

the data stays littleendian if the integer is hard coded in C#:

int myint;
myint = 1024;
byte[] b = new byte[4];
b = BitConverter.GetBytes(myint);

in debugger binaryData.buffer shows littleendian
[0] 0 byte
[1] 4 byte
[2] 0 byte
[3] 0 byte


in all cases BitConverter.IsLittleEndian shows true, so why is the integer
hard coded in tsql getting converted to big endian when it arrives in a clr
function?